<template>
  <div>
    <city-header></city-header>
    <city-search :cities="cities"></city-search>
    <city-list :cities="cities"
               :hot="hotCities"
                :letter="letter"></city-list>
    <city-alphabet :cities="cities" @change="handleLetterChange"></city-alphabet>
  </div>
</template>

<script>
  import axios from 'axios'
  import CityHeader from './components/Header.vue'
  import CitySearch from './components/Search.vue'
  import CityList from './components/list.vue'
  import CityAlphabet from './components/Alphabet.vue'
  import {mapState} from 'vuex'
  export default {
    name:'City',
    components:{
      CityHeader,
      CitySearch,
      CityList,
      CityAlphabet
    },
    data(){
      return{
        cities:{},
        hotCities:[],
        letter:'',
        lastCity:''
      }
    },
    methods:{
      getCityInfo(){
        axios.get('/api/city.json?city=' + this.city).then(this.handleGetCityInfoSucc)
      },
      handleGetCityInfoSucc (res) {
        res = res.data
        if (res.ret && res.data) {
          const data = res.data
          this.cities = data.cities
          this.hotCities = data.hotCities
        }
        console.log(this.hotCities);
      },
      handleLetterChange(letter){
        this.letter = letter;
      }
    },
    mounted(){
      this.lastCity = this.city;
       this.getCityInfo();
    },
    computed:{
      ...mapState(['city'])
    },
    activated() {
      if(this.lastCity !== this.city){
        this.lastCity = this.city;
        this.getCityInfo();
      }
    }
  }
</script>

<style lang="stylus" scoped>

</style>
